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CISCO 1760 Help

#1
Can anyone help? We have a couple of 1760 routers that have gone t*ts up. Someone (not me !) has changed the values in the config register and now on boot up they come up with a line of gash and then they just hang. We need to reload the IOS. Any help gratefully appreciated.
 
#7
Guru,

This link starts with an intro to the IOS, and links out to various articles on reloading/recovering the IOS.

Do you have a copy of your current config that can be used to tftp into the router via a console connection?

Boney
 
#9
the_guru said:
Can anyone help? We have a couple of 1760 routers that have gone t*ts up. Someone (not me !) has changed the values in the config register and now on boot up they come up with a line of gash and then they just hang. We need to reload the IOS. Any help gratefully appreciated.
What are the new values in the config reg this will determine our course of action

0x0000 Remains at bootstrap prompt
0x0001 Boot system image on EPROM
0x0040 ignores NVRAM contents
0x0100 Breaks disabled
0x2000 Sets defaulst ROM software if network boot fails
0x8000 Enables
diagnostic messages

We need to found out exactly were it fails when it boots attach a laptop to the console port using hyperterminal set the values to 9600 baud etc and capture the booting process to a text file.You can the read the file to pinpoint the start of the failure
 
#11
Problem solved. Firstly for some bizarre reason, the Router (not the laptop) had set its console port to 19k2, hence the gash. After that was found out, altering the confreg to change the password was a doozy.

Thanks for the assistance.
 
#13
The Console port on a 1760 defaults to 9k6 therefore it wouldn't just 'set itself' to 19k2, even if it did take a funny turn.
If I were you I'd be investigating this thoroughly to determine if it was simply a mistake or something a lot more serious.
Snort-rules up to date? :wink:
 
#15
A_NONYMOUS said:
The Console port on a 1760 defaults to 9k6 therefore it wouldn't just 'set itself' to 19k2, even if it did take a funny turn.
If I were you I'd be investigating this thoroughly to determine if it was simply a mistake or something a lot more serious.
Snort-rules up to date? :wink:
Without compromising, I can assure that no shenanigans have taken place. When I received the kit, thy had both been withdrawn from separate secure locations.
 
#16
If you ever need Cisco router or switch help, drop me a PM and I will try and help.
I am a Senior Cisco designer (ex TA Infantry) working for a large telco.
 

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